makes no sence to do a test on an other machine, coord's will allways be different.
Looks like you haven't read the suggested chapter of manaul about coords, Offsets and so on.
if you do a ref All, ONLY machine coord's will be zeroed and work coordinates will Display a value based on this
Zero and the actual work offstet.
go to diagnostic page, in the upper aeria all coords and offset's are displayed, Play arround with zeroing AND homing
and watch the values, maybe this helps to understand, why current Position can be differnt after homing.